Eruptions of the Yellowstone volcanic system have included the two largest volcanic eruptions in North America in the past few million years; the third largest was at Long Valley in California and produced the Bishop ash bed.
On the diesel Passat, the TDI badge stands for Turbocharged Direct Injection, which isn't really all that helpful as the gasoline-powered Passat is also turbocharged and also uses direct injection. Volkswagen attempts to clear this up by calling this Passat the Passat TDI Clean Diesel.
Following the government investigation of Volkswagenâs diesel emissions, The Detroit News reports the automaker ordered its U.S. dealerships to halt sales of new 2016 and remaining 2015 TDI car models with 2.0-liter diesel engines.W is barred from selling 2016 model vehicles with the 2.0 liter diesel engine until âthey get answers to the questions of how these vehicles are being operated. Volkswagen couldnât explain why weâre getting these excess emissions,â Grundler said.